P2227

P2227 00

Atmosphere Pressure Sensor Circuit, Performance Problem







Fault symptom
Check Engine
Limp home

On-board diagnosis

Type of diagnosis:
Continuous

Enable criteria:
Battery voltage must be between 11 - 16 V.
Ignition ON.
Engine speed 0 rpm.
Vehicle speed 0 km/h.
NONE of the following DTCs must be detected:
- P0107, P0108
- P0237, P0238
- P2228, P2229

Fault criteria:
Atmospheric pressure sensor value differs more than 15 kPa from intake manifold absolute pressure sensor or 10 kPa from charge air absolute pressure sensor. The difference between both absolute pressure sensors may be max. 10 kPa.

Dependent
None

System reaction to a fault:
Torque limited to max. 170 Nm.
Tank bleeding adaption is blocked and reset.
Substitution value for atmospheric pressure = boost pressure value (before damper) upon start of engine.

OK report:
Fault criteria NOT fulfilled.

Fault handling:
Type III
(See Description of On-Board Diagnostics/Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:
Test value:
- Atmospheric Pressure
- Manifold absolute pressure sensor
- Absolute pressure sensor, charge air